regard vs come to

regard is a noun but come to is not a noun.

Word	Noun	Adjective	Verb	Adverb
regard	Yes	No	Yes	No
come to	No	No	Yes	No

As verbs, come to is a hypernym of regard; that is, come to is a word with a broader meaning than regard:

Other hypernyms of regard include bear on, concern, have to do with, pertain, refer, relate, touch, touch on.

regard (noun)	come to (noun)
a long fixed look
(usually preceded by `in') a detail or point
paying particular notice (as to children or helpless people)
an attitude of admiration or esteem
(usually plural) a polite expression of desire for someone's welfare
a feeling of friendship and esteem
the condition of being honored (esteemed or respected or well regarded)

regard (verb)	come to (verb)
deem to be	return to consciousness
look at attentively	cause to experience suddenly
connect closely and often incriminatingly	attain
	be relevant to